Not a newbie to reptiles but a long time since I dipped my toes into royal genetics territory lol

I have been pondering and wondered if anyone can help with pics and stuff please.

First question is what is the difference between ultramel and coral glow. My eyes aren't great and most pictures, I can't tell a clear difference.

2nd question is what defines visually the sugar and calico genes please. Are they so similar in visual aspects that an untrained eye would struggle?

At what point is sugar added or calico added to a name from visual look only?

My newest arrival, a spider labelled as a cinnabee ( parents do confirm cinnabee ) has very very high white sides on her such is what sparked my thinking lol

Thanks k you in advance xxx